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Finding the Fourth Proportional to 614,005.80, 921,008.70 and 348,285.30

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Solution

The fourth proportional to 614,005.80, 921,008.70 and 348,285.30 is: 522,427.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,005.80 : 921,008.70 = 348,285.30 : x
  2. Step 2: Convert to fraction form
    614,005.80/921,008.70 = 348,285.30/x
  3. Step 3: Cross multiply
    614,005.80x = 921,008.70 × 348,285.30
  4. Step 4: Simplify right side
    614,005.80x = 320,773,791,382.11
  5. Step 5: Solve for x
    x = 320,773,791,382.11/614,005.80
  6. Step 6: Final answer
    x = 522,427.95

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.